This pack of filters can help you adding a blocky overlay to objects. May come handy at drawing blocks of stone.
Source Lazur URH
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
A grayscale fabric pattern with vertical lines of stitch holes.
Source V. Hartikainen
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
The starting point for this was drawn on the web site steamcoded.org/PolyskelionMaker.svg
Source Firkin
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
A version without colours blended together to give a different look.
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern formed from miutopia mug remixes on a tablecloth.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba